Lighting fixture



FIG. 1 is a perspective view of a lighting fixture showing my new design;

FIG. 2 is a front elevational view thereof, all sides being identical; and,

FIG. 3 is a bottom plan view thereof, the top surface being flat.

The broken-line showing of environmental structures in FIGS. 1-3 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a lighting fixture, as shown and described. 